249 lines
7.4 KiB
Diff
249 lines
7.4 KiB
Diff
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autofs-5.1.6 - add force unlink mounts and exit option
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From: Ian Kent <raven@themaw.net>
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Add a automount program option to force an unlink umount of all
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existing mounts under configured autofs mount points then exit.
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Signed-off-by: Ian Kent <raven@themaw.net>
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---
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CHANGELOG | 1 +
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daemon/automount.c | 51 +++++++++++++++++++++++++++++++++------------------
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daemon/direct.c | 12 +++++++++++-
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daemon/indirect.c | 21 ++++++++++++++++-----
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include/automount.h | 1 +
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lib/master.c | 6 ++++--
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man/automount.8 | 6 ++++++
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7 files changed, 72 insertions(+), 26 deletions(-)
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--- autofs-5.1.4.orig/CHANGELOG
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+++ autofs-5.1.4/CHANGELOG
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@@ -89,6 +89,7 @@ xx/xx/2018 autofs-5.1.5
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- use bit flag for force unlink mounts.
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- improve force unlink option description.
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- remove command fifo on autofs mount fail.
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+- add force unlink mounts and exit option.
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19/12/2017 autofs-5.1.4
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- fix spec file url.
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--- autofs-5.1.4.orig/daemon/automount.c
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+++ autofs-5.1.4/daemon/automount.c
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@@ -1153,8 +1153,13 @@ static int mount_autofs(struct autofs_po
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{
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int status = 0;
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- if (autofs_init_ap(ap) != 0)
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- return -1;
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+ /* No need to create comms fds and command fifo if
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+ * unlinking mounts and exiting.
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+ */
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+ if (!(do_force_unlink & UNLINK_AND_EXIT)) {
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+ if (autofs_init_ap(ap) != 0)
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+ return -1;
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+ }
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if (ap->type == LKP_DIRECT)
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status = mount_autofs_direct(ap);
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@@ -1859,7 +1864,8 @@ void *handle_mounts(void *arg)
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}
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if (mount_autofs(ap, root) < 0) {
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- crit(ap->logopt, "mount of %s failed!", ap->path);
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+ if (!(do_force_unlink & UNLINK_AND_EXIT))
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+ crit(ap->logopt, "mount of %s failed!", ap->path);
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suc->status = 1;
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umount_autofs(ap, root, 1);
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free(root);
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@@ -1951,6 +1957,7 @@ static void usage(void)
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" -C --dont-check-daemon\n"
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" don't check if daemon is already running\n"
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" -F --force forceably clean up known automounts at start\n"
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+ " -U --force-exit forceably clean up known automounts and exit\n"
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" -V --version print version, build config and exit\n"
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, program);
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}
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@@ -2202,7 +2209,7 @@ int main(int argc, char *argv[])
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time_t timeout;
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time_t age = monotonic_time(NULL);
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struct rlimit rlim;
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- const char *options = "+hp:t:vmdD:SfVrO:l:n:CFM";
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+ const char *options = "+hp:t:vmdD:SfVrO:l:n:CFUM";
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static const struct option long_options[] = {
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{"help", 0, 0, 'h'},
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{"pid-file", 1, 0, 'p'},
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@@ -2220,6 +2227,7 @@ int main(int argc, char *argv[])
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{"set-log-priority", 1, 0, 'l'},
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{"dont-check-daemon", 0, 0, 'C'},
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{"force", 0, 0, 'F'},
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+ {"force-exit", 0, 0, 'U'},
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{"master-wait", 1, 0, 'M'},
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{0, 0, 0, 0}
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};
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@@ -2342,6 +2350,11 @@ int main(int argc, char *argv[])
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do_force_unlink = UNLINK_AND_CONT;
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break;
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+ case 'U':
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+ flags |= DAEMON_FLAGS_FOREGROUND;
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+ do_force_unlink = UNLINK_AND_EXIT;
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+ break;
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+
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case '?':
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case ':':
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printf("%s: Ambiguous or unknown options\n", program);
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@@ -2657,25 +2670,27 @@ int main(int argc, char *argv[])
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}
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}
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- /*
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- * Mmm ... reset force unlink umount so we don't also do this
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- * in future when we receive a HUP signal.
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- */
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- do_force_unlink = 0;
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+ if (!(do_force_unlink & UNLINK_AND_EXIT)) {
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+ /*
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+ * Mmm ... reset force unlink umount so we don't also do
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+ * this in future when we receive a HUP signal.
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+ */
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+ do_force_unlink = 0;
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- if (start_pipefd[1] != -1) {
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- st_stat = 0;
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- res = write(start_pipefd[1], pst_stat, sizeof(*pst_stat));
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- close(start_pipefd[1]);
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- }
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+ if (start_pipefd[1] != -1) {
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+ st_stat = 0;
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+ res = write(start_pipefd[1], pst_stat, sizeof(*pst_stat));
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+ close(start_pipefd[1]);
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+ }
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#ifdef WITH_SYSTEMD
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- if (flags & DAEMON_FLAGS_SYSTEMD_SERVICE)
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- sd_notify(1, "READY=1");
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+ if (flags & DAEMON_FLAGS_SYSTEMD_SERVICE)
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+ sd_notify(1, "READY=1");
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#endif
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- state_mach_thid = pthread_self();
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- statemachine(NULL);
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+ state_mach_thid = pthread_self();
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+ statemachine(NULL);
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+ }
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master_kill(master_list);
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--- autofs-5.1.4.orig/daemon/direct.c
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+++ autofs-5.1.4/daemon/direct.c
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@@ -286,7 +286,14 @@ int do_mount_autofs_direct(struct autofs
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if (ret == 0)
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return -1;
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} else {
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- if (ap->state == ST_READMAP && is_mounted(me->key, MNTS_ALL)) {
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+ /* I don't remember why this is here for the force
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+ * unlink case. I don't think it should be but I may
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+ * have done it for a reason so keep it for the unlink
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+ * and continue case but not for the unlink and exit
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+ * case.
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+ */
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+ if (!(do_force_unlink & UNLINK_AND_EXIT) &&
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+ ap->state == ST_READMAP && is_mounted(me->key, MNTS_ALL)) {
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time_t tout = get_exp_timeout(ap, me->source);
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int save_ioctlfd, ioctlfd;
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@@ -319,6 +326,9 @@ int do_mount_autofs_direct(struct autofs
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goto out_err;
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}
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+ if (do_force_unlink & UNLINK_AND_EXIT)
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+ return -1;
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+
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if (me->ioctlfd != -1) {
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error(ap->logopt, "active direct mount %s", me->key);
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return -1;
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--- autofs-5.1.4.orig/daemon/indirect.c
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+++ autofs-5.1.4/daemon/indirect.c
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@@ -76,6 +76,9 @@ static int do_mount_autofs_indirect(stru
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"or failed to unlink entry in tree");
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goto out_err;
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}
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+
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+ if (do_force_unlink & UNLINK_AND_EXIT)
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+ return -1;
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}
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options = make_options_string(ap->path,
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@@ -163,12 +166,20 @@ int mount_autofs_indirect(struct autofs_
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int status;
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int map;
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+ /* Don't read the map if the unlink and exit option has been
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+ * given. do_mount_autofs_indirect() will return -1 if this
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+ * option has been given so there's no need to do anything
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+ * else.
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+ */
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+
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/* TODO: read map, determine map type is OK */
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- if (lookup_nss_read_map(ap, NULL, now))
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- lookup_prune_cache(ap, now);
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- else {
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- error(ap->logopt, "failed to read map for %s", ap->path);
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- return -1;
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+ if (!(do_force_unlink & UNLINK_AND_EXIT)) {
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+ if (lookup_nss_read_map(ap, NULL, now))
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+ lookup_prune_cache(ap, now);
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+ else {
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+ error(ap->logopt, "failed to read map for %s", ap->path);
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+ return -1;
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+ }
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}
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status = do_mount_autofs_indirect(ap, root);
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--- autofs-5.1.4.orig/include/automount.h
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+++ autofs-5.1.4/include/automount.h
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@@ -591,6 +591,7 @@ struct autofs_point {
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};
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#define UNLINK_AND_CONT 0x01
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+#define UNLINK_AND_EXIT 0x02
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/* Foreably unlink existing mounts at startup. */
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extern int do_force_unlink;
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--- autofs-5.1.4.orig/lib/master.c
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+++ autofs-5.1.4/lib/master.c
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@@ -1358,7 +1358,8 @@ static int master_do_mount(struct master
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suc.done = 0;
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suc.status = 0;
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- debug(ap->logopt, "mounting %s", entry->path);
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+ if (!(do_force_unlink & UNLINK_AND_EXIT))
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+ debug(ap->logopt, "mounting %s", entry->path);
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status = pthread_create(&thid, &th_attr, handle_mounts, &suc);
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if (status) {
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@@ -1376,7 +1377,8 @@ static int master_do_mount(struct master
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}
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if (suc.status) {
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- error(ap->logopt, "failed to startup mount");
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+ if (!(do_force_unlink & UNLINK_AND_EXIT))
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+ error(ap->logopt, "failed to startup mount");
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handle_mounts_startup_cond_destroy(&suc);
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return 0;
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}
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--- autofs-5.1.4.orig/man/automount.8
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+++ autofs-5.1.4/man/automount.8
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@@ -121,6 +121,12 @@ Don't check if the daemon is currently r
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Force an unlink umount of existing mounts under configured autofs managed
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mount points during startup. This can cause problems for processes with
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working directories within these mounts (see NOTES).
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+.TP
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+.I "\-U, \-\-force-exit"
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+Force an unlink umount of existing mounts under configured autofs managed
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+mount points and exit rather than continuing the startup. This can cause
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+problems for processes with working directories within these mounts (see
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+NOTES).
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.SH ARGUMENTS
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\fBautomount\fP takes one optional argument, the name of the master map to
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use.
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